JPS56130895A - Storage unit - Google Patents

Storage unit

Info

Publication number
JPS56130895A
JPS56130895A JP398881A JP398881A JPS56130895A JP S56130895 A JPS56130895 A JP S56130895A JP 398881 A JP398881 A JP 398881A JP 398881 A JP398881 A JP 398881A JP S56130895 A JPS56130895 A JP S56130895A
Authority
JP
Japan
Prior art keywords
storage unit
storage
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP398881A
Other languages
Japanese (ja)
Other versions
JPS6045508B2 (en
Inventor
Deebitsudo Puraisaa Uirubaa
Aaru Seretsuku Jieemuzu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS56130895A publication Critical patent/JPS56130895A/en
Publication of JPS6045508B2 publication Critical patent/JPS6045508B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G11C11/5692—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency read-only digital stores using storage elements with more than two stable states
JP56003988A 1980-03-03 1981-01-16 storage device Expired JPS6045508B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/126,636 US4322823A (en) 1980-03-03 1980-03-03 Storage system having bilateral field effect transistor personalization
US126636 1980-03-03

Publications (2)

Publication Number Publication Date
JPS56130895A true JPS56130895A (en) 1981-10-14
JPS6045508B2 JPS6045508B2 (en) 1985-10-09

Family

ID=22425921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003988A Expired JPS6045508B2 (en) 1980-03-03 1981-01-16 storage device

Country Status (7)

Country Link
US (1) US4322823A (en)
EP (1) EP0035646B1 (en)
JP (1) JPS6045508B2 (en)
AU (1) AU538544B2 (en)
CA (1) CA1169556A (en)
DE (1) DE3176927D1 (en)
ES (1) ES8202651A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143255A (en) * 1987-11-10 1989-06-05 Internatl Business Mach Corp <Ibm> Read-only memory

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380057A (en) * 1980-10-27 1983-04-12 International Business Machines Corporation Electrically alterable double dense memory
US4388702A (en) * 1981-08-21 1983-06-14 Mostek Corporation Multi-bit read only memory circuit
US4412309A (en) * 1981-09-28 1983-10-25 Motorola, Inc. EEPROM With bulk zero program capability
JPS59100562A (en) * 1982-11-30 1984-06-09 Mitsubishi Electric Corp Manufacture of read only semiconductor memory device
JPS62279598A (en) * 1986-05-28 1987-12-04 Fujitsu Ltd Read only memory
US5218569A (en) * 1991-02-08 1993-06-08 Banks Gerald J Electrically alterable non-volatile memory with n-bits per memory cell
US6353554B1 (en) * 1995-02-27 2002-03-05 Btg International Inc. Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell
US6870233B2 (en) * 2003-08-14 2005-03-22 Silicon Storage Technology, Inc. Multi-bit ROM cell with bi-directional read and a method for making thereof
US6927993B2 (en) * 2003-08-14 2005-08-09 Silicon Storage Technology, Inc. Multi-bit ROM cell, for storing on of N>4 possible states and having bi-directional read, an array of such cells
US7012310B2 (en) * 2003-08-14 2006-03-14 Silcon Storage Technology, Inc. Array of multi-bit ROM cells with each cell having bi-directional read and a method for making the array

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914855A (en) * 1974-05-09 1975-10-28 Bell Telephone Labor Inc Methods for making MOS read-only memories
US4096522A (en) * 1974-09-26 1978-06-20 Tokyo Shibaura Electric Co., Ltd. Monolithic semiconductor mask programmable ROM and a method for manufacturing the same
US4045811A (en) * 1975-08-04 1977-08-30 Rca Corporation Semiconductor integrated circuit device including an array of insulated gate field effect transistors
US4052229A (en) * 1976-06-25 1977-10-04 Intel Corporation Process for preparing a substrate for mos devices of different thresholds
US4161039A (en) * 1976-12-15 1979-07-10 Siemens Aktiengesellschaft N-Channel storage FET
US4142926A (en) * 1977-02-24 1979-03-06 Intel Corporation Self-aligning double polycrystalline silicon etching process
US4214359A (en) * 1978-12-07 1980-07-29 Bell Telephone Laboratories, Incorporated MOS Devices having buried terminal zones under local oxide regions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143255A (en) * 1987-11-10 1989-06-05 Internatl Business Mach Corp <Ibm> Read-only memory

Also Published As

Publication number Publication date
EP0035646A3 (en) 1983-08-03
EP0035646B1 (en) 1988-11-02
AU538544B2 (en) 1984-08-16
JPS6045508B2 (en) 1985-10-09
EP0035646A2 (en) 1981-09-16
DE3176927D1 (en) 1988-12-08
CA1169556A (en) 1984-06-19
US4322823A (en) 1982-03-30
ES498319A0 (en) 1982-02-01
ES8202651A1 (en) 1982-02-01
AU6753981A (en) 1981-09-10

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